Polypropylene — Diaphragm Pump, 3.6 GPM Max., 12VDC This listing is for each. Technical Specification Item Diaphragm Pump Inlet/Outlet 1/2-14 MSPT Housing Material - Pumps Polypropylene Max. Temp - Pumps 130 Degrees F Max. Flow 3.6 gpm Max. Pressure - Pumps 45 psi Voltage - Pumps 12V DC Diaphragm Material Santoprene(R) Check Valve Viton(R) Pressure On 25 Pressure Off 45 Length (In.) 9.8 in Width (In.) 5.0 in Height (In.) 4.4 in Prime in Feet 8 GPM @ 0 PSI 3.6 GPM @ 20 PSI 2.82 GPM @ 40 PSI 2.15 Self-Priming Yes Fuse Amps 15 A Pressure Switch Operates on Demand Diaphragm Design Three Chamber Agency Compliance UL Listing and CSA